I had the same problem with nylon, but didnt feel like buying more expensive ones..try this...

ok so when your sitting on the bike, look at your left foor, and see how the strap excess points kind of out/to the ground? well take the excess, and make it go over the last poart of the strap clip it just went under(so it now forms a loop around it, and nowjust weave it through back te way it came in..

so looking at picture 2: see how from the bike out it goes: strap under, over, under, over, under and out? just make it now go...strap under, over, under over, under, LOOP BACK over, then over again so its just like the part below it, then under(floowing ht first pass)over, under, and back out. now the excess strap will not be asmuch, and it will point intot he bike instead of away from it


does that make sense?